Unfortunately the Wald design listed has been canned, as it was only a concept. The new design that has replaced it for the E90 is also a concept, but rumors say that it's closer to actually being produced:

We have Hartge lips available at www.CONSTRUCTauto.com in Carbon Fiber, Painted or Primered! Made out of plastic compound called Flexiplex, they are stronger then fiberglass and they are flexible. Couple of customer photos:

anybody know what adhesive glue I can use to glue a M-tech rear wing?, I already tried 3m double side tape but didnt like the fit, plus with the 105 head out here in Texas it was starting to lift off - I went to the local home depot and saw a number of adhesives that offered to work on metal, fiberglass, etc... would any of these General purpose adhesives work? such as Liquidnails, etcs...

anybody know what adhesive glue I can use to glue a M-tech rear wing?, I already tried 3m double side tape but didnt like the fit, plus with the 105 head out here in Texas it was starting to lift off - I went to the local home depot and saw a number of adhesives that offered to work on metal, fiberglass, etc... would any of these General purpose adhesives work? such as Liquidnails, etcs...

any common adhesive suggestions?, I have liquinails that says good for metal, fiberglass, etc... asmentioned I tried 3M red double side tape and didnt like the fit, PLUS biggest issue is you could see the tape (Oreo effect!)... and it started to lift under our 105+ heat!